The molarity (M) of the acid in the lake water is
.
<u>Explanation:</u>
In order to estimate the concentration of a solution in molarity, then the total number of moles of the solute is divided by the total volume of the solution.
According to the given information, the formula will be applied for calculating molarity (M) of the acid in the lake water is :

Here;
are molarity of acid in the lake water and base solution respectively.
are volume of sample in the lake water and base solution respectively.
Given values are as follows:

Putting these values in above equation :




Therefore, the molarity (M) of the acid in the lake water is
.
<span>This is an example of a substance changing state, a physical change, the molecules are changed, but the atoms themselves do not change, just their arrangement, and the mass of the molecules is the same. Therefor energy is absorbed by the molecules, as energy is required to change the state or physicality of a molecule structure.Hope this helps. Let me know if you need additional help!</span>
Answer:
is the change in enthalpy associated with the combustion of 530 g of methane.
Explanation:

Mass of methane burnt = 530 g
Moles of methane burnt = 
Energy released on combustion of 1 mole of methane = -890.8 kJ/mol
Energy released on combustion of 33.125 moles of methane :


is the change in enthalpy associated with the combustion of 530 g of methane.
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The atoms in ceramic materials are held together by a chemical bond. The two most common chemical bonds for ceramic materials are covalent and ionic. For metals, the chemical bond is called the metallic bond. The bonding of atoms together is much stronger in covalent and ionic bonding than in metallic.
Ionized, become charged, become a cation
hopefully that helps